Assigbtor to moose bey



D. D. BUNDRICK. INSTRUMENT FOR DETERMINING TEMPERATURE AND HUMIDITY, AND MORE PARTICULARLY 0F DRY KILNS- APPLICATION F ILED JUNE 37.1921.

1,430,937. Patented Oct.192 2.

I! 2 H i: 7 5 7 12 ii 11 3N /6 w a Patented 0a. 3, 1922.

UNITED sTATss rsur OFFICE.

DAVID nnnrnnnnnnnren, or iaonsonvinnn, nrioarnn, nssrenon *ro Moons nn'r KILN 00., or monsonvrnnn, rnonrna, a. eonronnrron on FLORIDA.

INSTRUMENT FOR DETERMINING TEMPERATURE AND HlLTIIllIIlDITY, AND MORE PAJEt- TIG'U'LARLY 0 DR?! KILNS.

Application filed .Tune 3,

To all whom it may concern:

Be it known that 1, DAVID T)ANI1 1L BUND- RICK, residing at Jacksonville, county of Duval, and State of Florida, a citizen of the United States, have invented certain new and useful Improvements in Instruments for Determining Temperature and Humidity, and More Particularly of Dry Kilns, of which the following is a specification.

My invention relates to an improvement in instruments for determining temperature and humidity, andmore particularly of dry kilns. 4 r

The object is to provide a simple instrument of few parts,easily adaptable to the purpose, and capable of being stood on its base, or suspended from its upper end, and one which will be. effectual in the performance of its functions.

This temperature and. humidity measuring instrument includes a base adapted to contain water or other liquid and of such form and construction that the instrument may rest thereon, a frame extending upwardly therefrom, with means whereby the instrument may be suspended from the up per end, and means forming a part of the frame or an attachment thereto for the re movable support of a pair of wet and dry bulb thermometers.

This invention further consists in the foregoing parts with a wicking adapted to extend from the interior of the base to the wet-bulb thermometer.

In the accompanying drawings:

Fig. 1 is a vlew in perspective, the base broken away;

Fig. 2 is a sectional view through the upper end of the frame.

The numeral 1. represents the base. This is of a suitable length, and preferably rectangular in cross-section, and of sufficient dimensions to form .an effective means of supporting the instrument thereon. The base is hollow, forming a receptacle for water, and is provided with one or more holes 2 in the tube. The numeral 3 represents a frame preferably made of a single strip of metal bent to form the top cross bar 5 and the sides a. The ends of this frame 3 are secured to the ends of the base 1, and the sides 4 of which may converge more or less, and are connected at the top by a cross-bar 5, and also at a point a little less than midway from the base to the top by a crossbar 6. Bothcrossbars have holes '2' in alignment with each other, and the dry and wet bulb thermometers 8 and 9 are inserted tl'llOllgll these holes where they are held removably in any convenient manner, as for instance by means of the inverted Ushaped spring-plate 10, the ends of which bear yieldingly outward against the wet-and-zirybulb thermometers as shown. This spring-plate 10 is conveniently held in place by the same eye-bolt 11 and the nut 12, the eye-bolt extending through the handle l3, and the eye lt forming a convenient means for holding or suspending the instrument from a pin or hook on the wall or ceiling or other convenient point.

A flexible tube 15 of wiclring or other absorbent material is inserted through one of theholes 2 in the top of the base into the liquid chamber therein, and its upper end is sleeved around the bulb at the lower end of the wet-bulb thermometer, as a means of completing the humidity part of the instrnment.

From the foregoing, it will. be seen that both the wet and dry bulb thermometer can be easily removed or reinserted or replaced by new ones, if broken, and in fact this facilitates packing and shipping, and reduces jar or breakage.

These thermometers are accurate and unfailing and of the registering type, so that after being exposed to the temperature in a kiln, they can be taken out of the kiln and.

read without the mercury falling.

The instrument is simple and composed of few parts, is capable of being easily made, and at comparatively small initial cost, it is easily assembled, and, above all, is most effectual in the performance of the functions for which it is intended.

I claim:

1. An instrument of the character described, including a base having a flat bottom and a liquid chamber with an opening in the upper portion thereof, a frame e20 tending upwardly from the base having perforated cross-bars, wet and dry bulb thermometers extending through the perforations and removable from the frame, means for frictionally retaining said ther mometers in place, and an absorbent medium extending from the chamber in the base to one of the thermometers.

2. An instrument of the character described including a base having a fiat bot. tom upon which it may rest, aframe erected thereon and including perforated cross-bars,

wet and dry bulb thermometers inserted through said perforations, a spring. friction device for holding the thermometers removably in the perforations, a handle, a bolt extending throu h the handle, the upper cross-bar of-the rame, and the spring friction. device, and a nut screwed thereon for holding the handle, bolt, and friction device together. 3. The combinationwith, a rectangular base, an approximately A-shaped frame extending upwardly therefrom, including sides and cross-bars, the latter having holes therein and the topof the base also perforated, a handle secured to the top cross-bar of the frame, and having means whereby the frame may be suspended, wet anddry bulb thermometers insert-able in the holes in the cross bars, an inverted U-shaped friction device secured to the frame with its ends bearing yieldingly and frictionally a ainst said thermometers, and a. medium 0 absorbent material extendin from the interior of the base to one of t e thermometers.

4. An instrument of the character dey scribed, including a frame. of a'single strip of metal, the strip bent to form sides, top cross-bar, the cross-bar having openings therein, dry and wet bulb thermometers removably inserted through said 0 enings, and friction means for retaining e thermometers in place therein.

5. An instrument of the character described includin a frame made of a single strip of metal cut to form sides, a top cross-bar, the latter having openings therein,

an intermediate cross-bar having openings in alignment with the openings in the top cross-bar, wet and dry bulb thermometers inserted through said 0 enings and means for frictionally holding t e thermometers in place within the frame.

6. An instrument of the character described. including a frame made of a single strip of. metal bent to form sides, a top cross-bar, the latter having openings therein, an intermediate cross-bar having openings in alignment with the o nings in the top cross-bar, Wet and dry Yiillb thermometers inserted through said openings, means for frictionally holding the thermometers in place within the frame, a base to which the ends of the frame are secured, said base forming a receptacle for water, and a flexible tube of wicking extending from one of the thermometers into the Water in said base.

In testimony whereof I hereunto afix my signature.

DAVID DANIEL BUNDRICK. 

